更新到 Xcode 12 后无法在模拟器上运行 React Native 项目

Question

我刚刚更新到 Xcode 12，现在我的 React Native 项目（在更新前正在工作）将无法运行并输出此错误

An error was encountered processing the command (domain=NSPOSIXErrorDomain, code=2):
Failed to install the requested application
An application bundle was not found at the provided path.
Provide a valid path to the desired application bundle.
info Launching "app.lfgo.release"
error Failed to launch the app on simulator, An error was encountered processing the command (domain=FBSOpenApplicationServiceErrorDomain, code=4):
The request to open "app.lfgo.release" failed.
Underlying error (domain=FBSOpenApplicationErrorDomain, code=4):
    The operation couldn’t be completed. Application info provider (FBSApplicationLibrary) returned nil for "app.lfgo.release"
    Application info provider (FBSApplicationLibrary) returned nil for "app.lfgo.release"

Answer 1

升级到 Xcode 12 时，我也遇到了同样的情况。帮助（如果使用锁定文件）将 @react-native-community/cli-platform-ios 安装为 devDep 并将@react-native-community/cli-platform-iosyarn.lock 文件中的所有条目中的凹凸版本安装到 4.13 .0

Answer 2

不知道为什么这会为我解决这个问题或有关它的任何事情，但是......

使用npx react-native run-ios会给我抛出这个错误，但是当我通过 xcode 构建时它工作得很好。对我来说毫无意义，但是哦好吧......